With the channel button ( channel 1 ...12 ) on the bottom following settings are possible :

Each character has one start bit ( binary = 0 ), 8 information bits and normally one odd parity bit and one stop bit ( binary = 1 ).

For each channel any COM port ( COM 1 till COM 24 ) can be selected.

An individual modem can be installed and connected for each channel. LIAN 98 is able to process up to twelve modems in the range of COM1 till COM24 simultaneously. Select here the modem assigned to the selected channel. Normally this assignment will be recognized by LIAN 98 and the corresponding modem will be set.

The settings of the modem must be executed via the windows control panel "telephone and modem options". With this button you can check the modem settings and see if they correspond to the LIAN 98 configuration.

0 ... 1000 msec
This parameter ist only used for the connection type "half duplex" and is determined by the initial transient behaviour of the used transmission equipment.
The RTS Leading defines the delay time from activating RTS signal to transmitting the first character and is used for modems whithout the hardware handshake signals "RTS and CTS". In this case the "RTS signal" must be led back over the "CTS line" to the PC with the help of a brazing bridge in the monitor cable. Dependent of the used modem it may be necessary to connect additionally the DTR-pin with the DSR-pin.
This function is deactivated if the "Leading and the Trailing" is set to NULL and therefore the control signals are analyzed diectly from the modem.

0 ... 1000 msec
This parameter ist only used for the connection type "half duplex" and is determined by the final transient behaviour of the used transmission equipment.
The RTS Trailing defines the delay time from the last character transmitted up to the RTS signal is deactivated.
This function is deactivated, if the "Leading and the Trailing" is set to NULL.

Transmission speed : 25 - 115200 baud ( variable )

8 bit ( fixed )

1 bit ( variable )

odd ( variable )

1 - 9999 msec ( variable )

All telegrams to be sent are provided with the link address of the SIM list during master simulation.

Exception for unbalanced mode :
. If the station address 127 for a broadcast command is inserted in a telegram in the TDB buffer, the telegram will be transmitted unchanged with the address already inserted.
. If a station address out of the Scan list is inserted in a telegram, the telegram will be transmitted unchanged with the address already inserted.

1 - 30 000 msec

The SEAB-1F protocol specifies a fixed time out interval to be used for repeated frame transmissions. The time out interval and maximum number of retries are configurable and appropriate values will depend on the transmission system.

This parameter determines the time in milliseconds that the program LIAN 98 as primary station at most has to wait for an acknowledge before the last transmission is repeated.

0 - 255

Via this parameter it is defined how many times the transmission is to be repeated when the acknowledge is missing.

yes / no

After the initialization of the communication LIAN 98 will transmit first of all a time synchronization command and will repeat it cyclic ( Clock SYNC cycle time ), if this parameter is activated.

yes / no

If this parameter is activated the system time of the PC will be taken over as time stamp before transmitting the telegrams. Otherwise the telegram remains unchanged as before edited by the user.

1 - 1440 minutes

Dependent on this time LIAN 98 as master station will transmit the time synchronization command continually.

Number of the TDB buffer in which the organization command ( 2FH ) "Set time" is stored.

yes / no

If this parameter is activated LIAN 98 first of all will once send a date set command after the initialization of the connection.

Number of the TDB buffer in which the organization command ( 2FH ) "Set date" is stored.

yes / no

After the initialization of the communication LIAN 98 will transmit a general interrogation command and will repeat it cyclic ( GI cycle time ) when necessary, if this parameter is activated.

1 - 1440 minutes

Dependent on this time LIAN 98 as master station will transmit the general interrogation command continually.

Number of the TDB buffer in which the organization command ( 2FH ) "General interrogation" is stored.

yes / no

LIAN 98 will send an acknowledge after the receipt of a telegram if this parameter is activated. The acknowledge is also a short request to the same station.

Number of the TDB buffer in which the single character "Quittance" ( short request ) is stored.

Unbalanced : ( Party line / Line operation )
All stations to be processed at this line have to be inserted into the scan list. LIAN 98 establishes the connection to all this stations ( max. 32 stations ) and interrogates continuously the process data of this stations.

In order to insert the addresses please proceed as follows :

Activate "Insert scan addresses" ( button "insert" will be displayed ).
Insert in the fields "Link address" / "Address of ASDU" the station to be entered in the scan list.
Take over the addresses into the scan list by clicking "insert".
When all stations are inserted, please deactivate "insert scan addresses" ( button "insert" disappears ).

In order to delete a station out of this list select it and click "delete".

Unbalanced : yes / no

When the connection with the substation is finished LIAN 98 starts automatically with the interrogation of the stations. If this is not wanted, the polling can be deactivated here.

Unbalanced :
Number of the TDB buffer in which the telegram "Short request" is stored.

Unbalanced : 0 - 30 000 msec

This parameter determines the time that the program LIAN 98 delays the next short request.

All telegrams to be sent will be provided with the link address out of the SIM list during slave simulation.

balanced : 1 - 30 000 msec

The protocol SEAB-1F specifies a fixed time out interval to be used for repeated frame transmissions. The time out interval and the maximum number of retries are configurable and appropriate values are depend on the transmission system.

This parameter determines the time in milliseconds that the program LIAN 98 as primary station ( only balanced ) at most has to wait for an acknowledge before the last transmission is repeated.

Balanced : 0 - 255

Via this parameter it is defined how many times the transmission is to be repeated when the acknowledge is missing ( only balanced ).

yes / no

The current system time of the PC is given back in the "activation confirmation" of the time synchronization command, if this parameter is activated. Otherwise the received time will only be mirrored.

yes / no

With the receipt of the organization command "set time " also the system time of the PC is updated with the new values if this parameter is activated.

0 - 9 999 msec ( Telegram run time correction )

A correction value can be entered for the setting of the PC system time with a time synchronization command. It will be added onto the received value in the synchronization command.

yes / no

The system time of the PC will be inserted as time stamp in the telegram before transmission. Otherwise the telegram remains unchanged as before edited by the user.

yes / no

LIAN 98 as substation will send a quittance after the receipt of a telegram of the master if this parameter is activated.

Number of the TDB buffer in which the single character "Quittance" is stored.

Data acquisition is used in unbalanced data transmission procedures to update the controlling station with actual states in the controlled stations. The controlling station performs polling by interrogating the controlled stations sequentially. Controlled stations may only transmit when they are polled.

Cyclic polling is done automatically by LIAN 98 when master (RTI) simulation is started and the transmission procedure in the configuration is set to "U = unbalanced" and is not deactivated over the SIM list.

Cyclic data transmission is used to provide a continuous updating function of current values of process variables in balanced and unbalanced transmission procedures.

A cyclic data transmission is done in LIAN 98 via sending cyclic send jobs ( see "transmit" ) or a not terminated send sequence ( see "send sequence list" ).

yes / no

With this option already set monitoring filters for one channel can be deactivated temporarily without deleting them.

Here monitoring can be filtered for telegram specific values in which several OR-linked filter masks can be defined for the channel.

yes / no

With this option already set action filters for one channel can be deactivated temporarily without deleting them.

The action filter is described over telegram specific features corresponding to a filter setting. Additionally each action filter requires an allocation to a send buffer or alternatively to a send sequence.

In correspondence with the action filter the message buffer "from" or the message buffers "from/ till" are to be sent.

In correspondence with the action filter the send sequence is to be started at line number "from" or to be started at line number "from" and to be ended at line number "till".

yes / no

With this option already set start triggers for one channel can be deactivated temporarily without deleting them.

Here you can define telegram specific start triggers for monitoring in which several OR-linked triggers can be defined for the channel.

yes / no

With this option already set stop triggers for one channel can be deactivated temporarily without deleting them.

Here you can define telegram specific stop triggers for monitoring in which several OR-linked triggers can be defined for the channel.

Everything is displayed : Telegram header and information elements

No header is displayed : Only information element is displayed

No information element is displayed : Only telegram header is displayed

Within a telegram, there may be no pause between characters. In case of timeout occurs it is assumed that it is the end of the telegram and the telegram check is started. The sensitivity can be parameterized in the configuration ( timeout ).
Normally a time out is no error, but it is stored in the Pro file together with the initial error for a better analysis of the faulty transmission line in connection with a line error.

Error during writing on the COM port. May be it is already occupied by another program.

The length of the telegram is wrong.

The telegram checksum in the checksum byte is incorrect.

Error message from the UART. This error is noted only in the PRO file.

Error message from the UART. This error is noted only in the PRO file.

Error message from the UART. This error is noted only in the PRO file.

Direction bit is set wrong.

The respond at this time was not expected.

The received station address is incorrect or the entry in the SIM list is wrong.